1 pound fresh mushrooms
6 tablespoons olive oil
3/4 cup dry white wine
1 1/2 teaspoons salt
1/8 teaspoon cayenne pepper
1/4 teaspoon dried oregano
1/4 cup fresh parsley, chopped
2 tablespoons chopped onion
3 tablespoons lemon juice

Place mushrooms in a glass or earthenware bowl.

Combine remaining ingredients in a saucepan and simmer for 15 minutes.

Remove from heat and pour over mushrooms. Cover and refrigerate for several hours or overnight.